Smith, Harris Pearson. <br/><br/>
Farm machinery and equipment / 
Harris Pearson Smith and Lambert Henry Wilkes. 
 - 6th ed. 
 - New York :  McGraw-Hill,  c1976. 
 - viii, 488 p. :  ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0070589577 
<br/><br/><label>LCCN: </label>93013077     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural machinery.<br/>Agricultural innovations.